package cn.wolfcode.shop.cloud.resolver;

import cn.wolfcode.shop.cloud.domain.User;
import cn.wolfcode.shop.cloud.redis.MemberKeyPrefix;
import cn.wolfcode.shop.cloud.redis.RedisService;
import cn.wolfcode.shop.cloud.util.CookieUtil;
import cn.wolfcode.shop.cloud.util.ParamType;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.MethodParameter;
import org.springframework.web.bind.support.WebDataBinderFactory;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.method.support.ModelAndViewContainer;

import javax.servlet.http.HttpServletRequest;

public class UserArgumentsResolver implements HandlerMethodArgumentResolver {
    @Autowired
    private RedisService redisService;


    @Override
    public boolean supportsParameter(MethodParameter methodParameter) {
        return methodParameter.getParameterAnnotation(ParamType.class) !=null && methodParameter.getParameterType() == User.class;
    }

    @Override
    public Object resolveArgument(MethodParameter methodParameter, ModelAndViewContainer modelAndViewContainer, NativeWebRequest nativeWebRequest, WebDataBinderFactory webDataBinderFactory) throws Exception {
        HttpServletRequest request = nativeWebRequest.getNativeRequest(HttpServletRequest.class);
        String token = CookieUtil.getToken(request, "userToken");
        User user = redisService.get(MemberKeyPrefix.USER_TOKEN, token, User.class);
        if(token == null){
            return null;
        }

        return user;
    }
}
